BC337-40 A1G

Single Bipolar Transistors Overview

The BC337-40A1G is an NPN silicon epitaxial planar transistor manufactured by Taiwan Semiconductor Corporation. It belongs to the BC337 series, specifically the -40 gain group, designed for switching and audio frequency amplifier applications. Key electrical parameters include a maximum collector current of 800 mA, a collector-emitter voltage (VCEO) of 45 V, and a collector-base voltage (VCBO) of 50 V. The device features a transition frequency (fT) of 100 MHz and a power dissipation rating of 625 mW. It utilizes a TO-92 three-pin through-hole package.

Single Bipolar Transistors Feature Summary

• Subdivided into specific DC current gain groups (-16, -25, -40) to ensure consistent amplification performance.
• Engineered with low collector-emitter saturation voltage for efficient switching operations.
• Constructed using Pb-free and RoHS compliant materials with halogen-free green compound packaging.

Single Bipolar Transistors Applications

• General-purpose switching circuits
• Audio frequency (AF) amplifier stages
• Driver transistor applications

Single Bipolar Transistors Procurement Notes

Verify the manufacturer marking on the component body matches Taiwan Semiconductor Corporation specifications. Confirm the suffix 'A1G' corresponds to the correct reel or tape-and-reel packaging configuration as defined in the official datasheet. Ensure the gain binning aligns with the required circuit design specifications before integration.

Single Bipolar Transistors Selection Notes

Select this component when a general-purpose NPN transistor with moderate current handling and high gain consistency is required. The -40 designation indicates a higher hFE range compared to standard variants, making it suitable for sensitive amplifier designs. Consider thermal management requirements due to the 625 mW power dissipation limit in the TO-92 package.

Single Bipolar Transistors Part Context

This part is part of the widely used BC337 family of NPN transistors. The BC337 series is a standard solution for low-power switching and linear amplification tasks across various consumer and industrial electronics. The specific -40 variant offers tighter gain control for applications demanding predictable signal amplification characteristics.

Single Bipolar Transistors Replacement Considerations

Compatible substitutes include BC337-40 from other manufacturers such as onsemi or Diotec, provided they meet the same 800 mA, 45 V, and TO-92 package constraints. Verify that replacement parts maintain the same hFE gain binning to ensure circuit performance parity.

Single Bipolar Transistors FAQ

What does the '-40' suffix indicate in the BC337-40 model?

The '-40' suffix denotes the DC current gain (hFE) grouping. This specific bin ensures the transistor falls within a higher gain range compared to the -16 or -25 variants, providing more consistent amplification performance.

Is the BC337-40A1G lead-free?

Yes, the component is Pb-free and RoHS compliant. It also utilizes a halogen-free green compound for its encapsulation material.

What is the maximum collector current for this transistor?

The maximum continuous DC collector current (IC) is rated at 800 mA.